Sorrowful air raid alarm sounded instantly, sentry sent out signal, radar also issued alarm at the first time, instantly let the hunter's school blow up.
When the air raid alarm sounded, a family of three days and a maid hid in the yard shelter.
Like firefighters hearing fire alarms, like anti-aircraft artillery hearing air raid alarms, Dad came, Mom came, Grandma came.
The air raid alarm sent people running home.